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path: root/src/plugins/linux-cp/lcp_nl.c
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2022-03-04linux-cp: fix issue of possibly closing negative fdAlexander Chernavin1-5/+14
Type: fix Primarily fix an issue reported by Coverity in lcp_nl_open_sync_socket() that close() could possibly be run with negative fd. Also, add more checks and error logging there. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I9a88520d068392977a6eba0766451e5652fe512c
2022-03-04linux-cp: stop signaling read event on every notifAlexander Chernavin1-7/+9
Type: improvement Currently, read event signal is sent on every notification message received and added in the queue. With this change, signal read event only when all currently available notification messages are received. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: Ib86d189311ce01f50167e4e97feb99df0292ad96
2022-03-04linux-cp: stop ignoring ENOBUFS while reading notifAlexander Chernavin1-9/+2
Type: improvement Currently, while reading notifications, ENOBUFS error is ignored and reading continues. This was done to minimize the number of notifications that are lost due to reopening the socket. Now that synchronization is implemented to recover from socket errors, ignoring ENOBUFS and reading as much notifications as possible is not actual. Before synchronization, all currently enqueued notification are discarded in any case. With this change, stop reading notifications if any error occurs. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I1184d9a3aa99df63ef59bc2a67be2b1e5e0e9329
2022-03-03linux-cp: resync with kernel after nl socket errorAlexander Chernavin1-27/+463
Type: improvement Currently, if an error happens on the netlink notification socket, the socket gets reopened. A portion of notification messages have been lost because of this and will never arrive on the socket. VPP will be out of sync with the kernel networking state. With this change, synchronize VPP state and the kernel networking state if there was an error polling or reading the notification socket. Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I8cdff89b505cd227535a0acaadb6ee757204c45e
2022-01-28linux-cp: Fix coverity issuePim van Pelt1-1/+1
Type: fix Possible negative return in open(), do not use curr_ns_fd if it is negative. Addresses Coverity issue 248535 Signed-off-by: Pim van Pelt <pim@ipng.nl> Change-Id: I8429ede0f1fe9fe6619e3c4dbd83adb620ea62c2
2022-01-28linux-cp: Linux Control Plane Netlink ListenerNeale Ranns1-0/+582
Type: feature please see FEATURE.yaml for details. Signed-off-by: Neale Ranns <nranns@cisco.com> Signed-off-by: Matthew Smith <mgsmith@netgate.com> Signed-off-by: Jon Loeliger <jdl@netgate.com> Signed-off-by: Pim van Pelt <pim@ipng.nl> Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: I6255fd9953d0b03e6b4fe75b67a6845a7c206f74 Signed-off-by: Pim van Pelt <pim@ipng.nl>